head to head
Portal asks more than MouseCraft, and the gap is execution.

Optimization · Pure Optimization
A Tetris-meets-Lemmings puzzler testing deterministic block-placement planning.

Optimization · Pure Optimization
The portal-gun puzzle game whose solutions are everything.
MouseCraft leans Optimization (Pure Optimization); Portal leans Optimization (Pure Optimization).
Portal leans clearly harder on execution.
MouseCraft
Placing tetrominoes calmly - mild timing on live mice
Portal
Portal placement timing modest.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
MouseCraft
Mice march predictably like Lemmings
Portal
No adversary modeling player.
MouseCraft leans a little harder on variance, though the gap is small.
MouseCraft
Levels are fixed and fully visible
Portal
Deterministic chambers; no randomness.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
MouseCraft
Each stage is a deterministic block-placement puzzle to solve
Portal
Pure puzzle-solving optimization.
A matching score does not mean a matching test. Two games can both sit at 10 on execution and demand completely different things of you - which is why the reasoning above matters more than the number beside it.